Reptiles

• Reptiles are  vertebrates
• They have backbones.
•  They are air-breathing, cold-blooded.
• They have scaly bodies.
• Most reptile species are egg-laying.
• Although lizards, snakes and worm-lizards  give birth to live young.
• All species fertilize eggs internally.
• All species of reptiles have at least one lung.

The major groups of living reptiles are:

The Turtles                                         order Testudines

Tuatara                                              order Rhynchocephalia [Sphenodontida]

Lizards and snakes                          order Squamata

Crocodiles                                           order Crocodylia, or Crocodilia

Average Life Span of Reptiles in Captivity